English Reference

Word

sturgeon

Phoneticsstur·geon

US/ˈstɝdʒən/

UK/stˈɜːdʒən/

Definitions

01the fish

C2 · Science

n. a very large, long-lived fish that lives in both salt and fresh water, known for producing caviar.

n. any large primitive fish of the family Acipenseridae, characterized by bony plates and prized for its roe.

“The sturgeon can live for over a hundred years in the wild.”

“Conservationists are working to restore the population of Atlantic sturgeon, which has been decimated by overfishing and habitat loss.”

Technical

02military submarine

C2 · Science

n. a type of powerful submarine used by the US Navy during the Cold War.

n. a member of the Sturgeon-class of nuclear-powered attack submarines operated by the United States Navy.

“He served on a sturgeon during his time in the navy.”

“The Sturgeon-class submarines were designed specifically for anti-submarine warfare in the deep waters of the open ocean.”

American English · Technical

Real-World Examples

“Lake sturgeon may be among the longest-living vertebrates, second only to Greenland sharks, according to recent research.”
Smithsonian Magazine · 16 Sept 2026
“We were delighted to detect a variety of species in their appropriate habitats that are considered at risk in Missouri , including the lake sturgeon , crystal darter and Alabama shad .”
The Conversation · 24 Aug 2026

Etymology

From Middle English sturgiun, sturjoun, from Old French estorjoun (“sturgeon”), from Frankish sturjō, from Proto-Germanic sturjô (“sturgeon”).

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Domains

MilitaryNautical

This entry

Level
C2 · Proficiency
Frequency
Frequent
Updated

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English Reference